小编给大家分享一下angularjs循环对象属性如何实现动态列,相信大部分人都还不怎么了解,因此分享这篇文章给大家参考一下,希望大家阅读完这篇文章后大有收获,下面让我们一起去了解一下吧!
angularjs循环对象属性实现动态列
优点:保存对象,在数据库只保存一条数据
缺点:添加对象属性需要修改表结构、代码,然后重新重新发布
实现思路
1)数据库创建表(对象)、创建字段(对象属性)
2)根据表(对象)、字段(对象属性)生成配置表
3)根据表(对象)、字段(对象属性)生成三层架构
4)demo代码如下
1.接口代码:
using Microsoft.AspNetCore.Mvc; using Microsoft.Extensions.Logging; using Newtonsoft.Json; using System; using System.Collections.Generic; using System.Diagnostics; using System.Linq; using System.Threading.Tasks; using WebApplication1.Models; namespace WebApplication1.Controllers { public class HomeController : Controller { public IActionResult Index(string objecttype) { ViewBag.objecttype = objecttype; return View(); } [HttpPost] public JsonResult GetItem(string objecttype) { if (objecttype == "student") { Student item = new Student { no = "S001", name = "张三", gender = "男", }; List<Column> columns = new List<Column>(); columns.Add(new Column { columnname = "no", displaynname="学号" }); columns.Add(new Column { columnname = "name", displaynname = "姓名" }); columns.Add(new Column { columnname = "gender", displaynname = "性别" }); return Json(new { code = "1", msg = "", item = item, columns = columns }); } else { School item = new School { no = "S001", name = "浙江大学", address = "浙江", }; List<Column> columns = new List<Column>(); columns.Add(new Column { columnname = "no", displaynname = "编码" }); columns.Add(new Column { columnname = "name", displaynname = "名称" }); columns.Add(new Column { columnname = "address", displaynname = "地址" }); return Json(new { code = "1", msg = "", item = item, columns = columns }); } } [HttpPost] public JsonResult SaveItem(string objecttype, string itemstring) { if (objecttype == "student") { Student item = JsonConvert.DeserializeObject<Student>(itemstring); } else { School item = JsonConvert.DeserializeObject<School>(itemstring); } return Json(new { ResultCode = "1", ResultMessage = "保存成功!" }); } } public class Student { public string no { get; set; } public string name { get; set; } public string gender { get; set; } } public class School { public string no { get; set; } public string name { get; set; } public string address { get; set; } } public class Column { public string columnname { get; set; } public string displaynname { get; set; } } }
2.angularjs前端代码
@{ ViewData["Title"] = "Home Page"; } <script type="text/javascript"> var app = angular.module("my_app", []); app.controller('my_controller', function ($scope) { //保存 $scope.saveItem = function () { var itemstring = JSON.stringify($scope.item) $.post('@Url.Action("SaveItem", "Home")', { objecttype: '@ViewBag.objecttype', itemstring: itemstring }, function (data) { }); } //获取 $scope.getItem = function () { $.post('@Url.Action("GetItem", "Home")', { objecttype: '@ViewBag.objecttype' }, function (result) { $scope.item = result.item; $scope.columns = result.columns; $scope.$apply(); }); } $scope.getItem(); }); </script> <div> <ul> <li ng-repeat="column in columns"> <span>{{column.displaynname}}</span> <input ng-if="item[column.columnname]&&item[column.columnname].length" ng-model="item[column.columnname]" /> </li> </ul> <input type="button" value="保存" ng-click="saveItem();" /> </div>
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